Just to be pedantic, would not an anti semite hate both Jews and Arabs?
I understand that both peoples are supposedly descended from Noah's son Shem.
Black Africans are Hamitic- descendents of Ham.
Japhet seems to have been less easy to categorise, since he must have given rise to Mediterranean, Nordic, Chinese, Native American peoples, and all the rest.
I understand that the term anti-semitic has become applied purely to sentiments directed against Jewish people- but it's not actually correct, and I feel that realising that fact puts the mutual dislike of the two middle eastern groups into perspective.
Cheers
Dave